I would imagine for $800 you could get a place that isn’t someones attic,
Lets say you do take the $800 a month bedroom, Kathy has some rules.
No noise after 7 pm
No coming and going at all hours of the night. Curfew is 9 pm sharp !
No parking anywhere near the house
If Kathy has company over, you must leave prior to their arrival and return after the agreed time.
I have no idea if these are the actual rules, but if you are going to move into Grandma’s attic they might as well be.